A Three-loop Neutrino Model with Leptoquark Triplet Scalars

TL;DR

This paper introduces a three-loop neutrino mass model with leptoquark triplet scalars that simultaneously explains B-meson decay anomalies, muon g-2, and provides a dark matter candidate, while satisfying lepton flavor violation constraints.

Contribution

It presents a novel three-loop neutrino mass model incorporating leptoquark triplet scalars, linking multiple phenomena and constraints in particle physics.

Findings

Identifies parameter regions compatible with experimental constraints.

Demonstrates the model can explain B-meson anomalies and muon g-2.

Provides a viable dark matter candidate within the model.

Abstract

We propose a three-loop neutrino mass model with a few leptoquark scalars in $SU(2)_L$-triplet form, through which we can explain the anomaly of $B \to K^{(*)} \mu^+ \mu^-$, a sizable muon $g-2$ and a bosonic dark matter candidate, and at the same time satisfying all the constraints from lepton flavor violations. We perform global numerical analyses and show the allowed regions, in which we find somewhat restricted parameter space, such as the mass of dark matter candidate and various components of the Yukawa couplings in the model.